This 0.05" (1.27mm) pitch female socket header is a 2×5 (10-pin) through-hole connector designed for fine-pitch applications. Originally sourced as the mating connector for the PMSA003I Air Quality Sensor and the PMSA003I Air Quality Breakout, it's now available on its own for custom PCB projects.
The 1.27mm pin spacing is half the standard 2.54mm pitch, making it suitable for compact board designs where space is at a premium. The header is primarily designed for through-hole soldering, but the flat pins can be bent outward for surface-mount (SMT) applications if needed.
This connector also matches the standard SWD (Serial Wire Debug) pinout, so it's a handy part to have for debugging ARM-based microcontrollers like those found in STM32, nRF52, and RP2040 boards. If you're designing a custom PCB that needs a compact 10-pin debug header or sensor connector, this is the part you're after.
Key Features
Adafruit
0.05" Pitch Thru-Hole Female Socket Header 2x5 10-pin
A compact 0.05" pitch (1.27mm) thru-hole female socket header in a 2×5 (10-pin) configuration. Originally designed for use with the PM2.5 Air Quality Sensor ...
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A compact 0.05" pitch (1.27mm) thru-hole female socket header in a 2×5 (10-pin) configuration. Originally designed for use with the PM2.5 Air Quality Sensor (PMSA003I) and its breakout board, this header is also handy for your own sensor and prototyping projects.
These headers match standard SWD (Serial Wire Debug) connectors, making them useful for debugging ARM-based microcontrollers. Although designed for through-hole mounting, the flat pins can be bent outward for surface-mount (SMT) use.
Key Features
- 0.05" (1.27mm) Pitch – Fine-pitch spacing for compact board designs
- 2×5 Configuration – 10 pins total in a dual-row layout
- Through-Hole Mounting – Solder directly into your PCB; pins can be bent for SMT use
- SWD Compatible – Matches standard SWD debug connector pinouts
Ideal For
- Air quality sensor breakout boards (e.g. PMSA003I)
- SWD debugging connections on ARM microcontrollers
- Custom PCB prototyping with fine-pitch connectors
Package Contents
- 1× 0.05" Pitch Thru-Hole Female Socket Header (2×5, 10-pin)
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- SWD
- Serial Wire Debug (SWD) is a two-wire programming and debugging interface used with many ARM Cortex-M microcontrollers. It provides low-level access to program, recover or debug the microcontroller.
- through-hole
- A mounting style where the component leads pass through holes in a circuit board and are soldered on the other side. Through-hole parts are often easier to handle and solder by hand, which is useful for classroom and hobby projects.
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